when riots erupted in vancouver in 2011, police elected more than 5,000 hours of video. a team of 50 video experts at the indianapolis video lab spent two weeks searching for suspects. their work has led to charges of more than 200 people for rioting. fed ricks expects the examination of the boston video will continue even though the suspects no longer pose a threat. >> they're going have to go through all that video to ensure that they're being thorough and that they're not missing anybody. >> reporter: the value of video forensics can go beyond helping with arrests. in court the images can provide compelling evidence of the crime. john blackstone, cbs news, san francisco. >>> well, coming up after your local news on "cbs this morning," the very latest on the boston bombing investigation. we will hear from john miller. >>> plus, record-breaking flooding in the midwest. we'll get the latest from the scene. >>> and we'll ichb trow deuce you to the 2013 teacher of the year, jeff charbonneau. that's the "cbs morning news" for this monday. thanks for watching. i'm anne-marie